Don't include the intrinsics headers in SkFloatingPoint.h
Don't include the intrinsics headers in SkFloatingPoint.h

They're only used for the legacy implementation of sk_float_rsqrt,
which is going away.

SkFloatingPoint.h is part of ca 10,000 translation units when building
Chrome, and include graph analysis shows that including xmmintrin.h
adds a total of 3.5 GB to the build.

Avoiding these includes shaves ca 7 CPU-minutes off a local Chrome
build.

Bug: skia:11861 chromium:242216
Change-Id: Ib0fd53c4fb3ae254814fb6ae5afbb298efb0eb83
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/400437
Commit-Queue: Mike Klein <14574f09dfa9b4e14759b88c3426a495a0e627b0@google.com>
Reviewed-by: Mike Klein <14574f09dfa9b4e14759b88c3426a495a0e627b0@google.com>

google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia